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Date: Wed, 6 Mar 2013 11:34:06 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: lockdep: access percpu variable too early
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* Ming Lei <ming.lei@canonical.com> wrote:

> On Wed, Mar 6, 2013 at 6:20 PM, Ingo Molnar <mingo@kernel.org> wrote:
> >
> > What's the practical effect of it? Do we copy the value from the boot CPU and 
> > thus the secondary CPUs start with slightly increased stats?
> 
> Yes, it is the major effect.
> 
> Also the arch dependent __my_cpu_offset might be initialized a bit late.

I suspect we could try to fix it - post-initializing it after percpu setup sounds 
like a viable option, if it does not get too ugly.

Thanks,

	Ingo